Medical cutting devices having a blade working body that defines an opening for emitting coolant therefrom and related methods

ABSTRACT

Medical cutting devices having a working blade body that defines an opening for emitting coolant therefrom and related methods are disclosed. According to an aspect, a cutting device a static casing. The cutting device also includes a blade working body attached to the static casing and including a first end and a second end. The first end is configured to operatively connect to a source of movement. The second end includes a cutting component. The blade working body defines an interior channel that extends between the first end and the second end, and defines one or more openings at the second end for emitting coolant, such as a gas, through the interior channel.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Provisional Patent ApplicationNo. 63/292,438, filed Dec. 22, 2021, and titled MEDICAL DEVICES ANDRELATED METHODS FOR TRANSFORMING BONE, OTHER TISSUE, OR MATERIAL, thecontent of which is incorporated herein by reference in its entirety.

This application is related to U.S. Nonprovisional patent applicationSer. No. ______, filed simultaneously herewith, and titled MEDICALCUTTING DEVICES WITH A STATIC CASING AND A BLADE WORKING BODY OF GREATERWIDTH AND RELATED METHODS.

This application is related to U.S. Nonprovisional patent applicationSer. No. ______, filed simultaneously herewith, and titled MEDICALCUTTING DEVICES WITH STATIC COMPONENTS HAVING TEMPERATURE SENSORS ANDRELATED METHODS.

This application is related to U.S. Nonprovisional patent applicationSer. No. ______, filed simultaneously herewith, and titled MEDICALCUTTING DEVICES WITH COOLANT MODULES AND CHANNELS AND ASSOCIATEDMETHODS.

This application is related to U.S. Nonprovisional patent applicationSer. No. ______, filed simultaneously herewith, and titled MEDICALCUTTING DEVICES HAVING A WORKING BLADE BODY WITH STATIC COMPONENTS ANDRELATED METHODS OF USE.

TECHNICAL FIELD

The presently disclosed subject matter relates generally to medicaldevices. Particularly, the presently disclosed subject matter relates tomedical cutting devices having a working blade body that defines anopening for emitting coolant therefrom and related methods.

BACKGROUND

Traditional surgical saws, such as oscillating saws and reciprocatingsaws, allow users to cut bones (i.e. perform osteotomies) of relativelylarge diameters, such as the tibia and femur. These types of surgicalsaws, however, which are similar in many ways to the toothed saws usedto cut wood, metal, and plastic, have significant disadvantages withrespect to a patient's well-being. Because surgical saws utilize rapidmotion of the saw blade to cut biological tissues, such as bone andcartilage, a significant amount of heat is generated along the blade andparticularly at the blade and bone interface. This can be harmful to thepatient since prolonged exposure of bone cells to temperatures at or inexcess of 47° C. leads to necrosis of those osteocytes. Anotherdisadvantage of these oscillating and reciprocating bone saws is thatthey produce uneven cuts, preventing ideal realignment and reduction ofthe osteotomy gap, which is detrimental to efficient healing of thebone. Oscillating and, in particular, reciprocating bone saws, whichutilize a number of sharpened teeth along their cutting edges, can tearneighboring soft tissues that are inadvertently caught in the serrationsof the rapidly moving blade. Tearing of these soft tissues leads tosignificant blood loss and potential nerve damage, which undoubtedlyhampers the health of the patient.

Traditional oscillating and reciprocating bone saws have employed avariety of different measures to address these disadvantages. Withrespect to the generation of excessive heat, these surgical saws canutilize irrigation systems to flush the surgical site near the blade andbone interface. These irrigation systems can be separate, requiring anadditional device at the surgical site, or integrated. Althougheffective at flushing a surgical site of unwanted sources of addedfriction, these irrigation systems are relatively ineffective atactually cooling the blade at the blade and bone interface. For example,one design for a surgical saw that incorporates a means for irrigationcomprises a channel between otherwise parallel portions of a saw bladethrough which fluid can flow out into the surgical site (See U.S. Pat.No. 5,087,261). This channel, though, can be easily compacted withsurgical debris, rendering the integrated irrigation system unusable. Inaddition, providing a channel between parallel portions of the saw bladenecessarily increases the likelihood of a wider, more uneven cut. Otherdesigns for an oscillating bone saw include outlets along the blade'sedge to facilitate irrigation along the blade and bone interface (SeeU.S. Pat. Nos. 4,008,720 and 5,122,142). However, these channels can besimilarly compacted with surgical debris, rendering them useless. Moreso, channels along the very blade edge result in a blade edge that isnot continuous, which reduces the cutting efficiency of the blade.Despite any potential efficacy in flushing a site of surgical debris,these systems do very little to actually cool the very blade edge,specifically at the blade and bone interface. Additionally, havingcopious amounts of irrigation fluid in the surgical site can hamper thesurgeon's ability to visualize important anatomic structures.

Just as with saws used to cut wood, metal, and plastic, a user can avoidrough or uneven cuts by using a saw blade that incorporates more teethalong the edge of the blade and/or teeth having differing angles. Whilethis can produce a relatively finer cut, the resulting cut still leavesmuch to be desired in terms of producing smooth, even bone surfaces.Cutting guides, which help to stabilize the blade and keep it on aprescribed plane, are often utilized during an osteotomy to improve theprecision of the cut. Still, the improvement is not substantial enoughto consider these measures a long-term solution with respect toproducing smooth bone cuts. In fact, adding teeth or guiding the bladeedge have little effect in preventing inadvertent tearing of neighboringsoft tissues. Although efforts are taken to protect soft tissues fromdamage and prevent significant blood loss, the inherently close confinestypical in performing any osteotomy make it extremely difficult tocompletely eliminate such damage, especially to those tissues that areunseen or positioned beneath the bone being cut. This is compounded bythe fact that the saw blades used with many oscillating andreciprocating bone saws are relatively large.

A variety of ultrasonic surgical devices are now utilized in a number ofsurgical procedures, including surgical blades that are capable ofcutting biological tissues such as bone and cartilage. These types ofsaw blades are powered by high-frequency and high-amplitude sound waves,consequent vibrational energy being concentrated at the blade's edge byway of an ultrasonic horn. Being powered by sound waves, neighboringsoft tissues are not damaged by these types of blades because theblade's edge effectively rebounds due to the elasticity of the softtissue. Thus, the significant blood loss common with use of traditionalbone saws is prevented. In addition, significantly more precise cuts arepossible using ultrasonic bone cutting devices, in part, because theblade's edge does not require serrations. Instead, a continuous andsharpened edge, similar to that of a typical scalpel, enables a user tobetter manipulate the surgical device without the deflection caused byserrations, which is common when using oscillating and reciprocatingbone saws. Although ultrasonic cutting blades are advantageous in thatthey are less likely to tear neighboring soft tissues and more likely toproduce relatively more even cuts, these types of blades still generateconsiderable amounts of heat.

As with traditional bone saws, separate or integrated irrigation systemsare often utilized in order to flush the surgical site and generallyprovide some measure of cooling effect to the blade. However, many ofthese blades suffer from the same disadvantages as traditional bone sawsthat have tried to incorporate similar measures. For example, providingopenings along the blade's edge through which fluid flows introducesvoids in the cutting edge, thereby inhibiting the cutting efficiency ofthe blade (See U.S. Pat. No. 5,188,102). In addition, these fluidopenings can be readily compacted with surgical debris, rendering themuseless for their intended function. In other blade designs, thecontinuity of the blade is maintained and a fluid outlet is positionedjust before the blade's edge (See U.S. Pat. No. 8,348,880). However,this fluid outlet merely irrigates the surgical site since it ispositioned too far from the blade and bone interface to actually providethe necessary cooling effect. Also, it irrigates only one side of theblade. Another design for an ultrasonic cutting device, which claims tocool the blade, incorporates an irrigation output located centrallyalong the longitudinal axis of the blade (See U.S. Pat. No. 6,379,371).A recess in the center of the blade tip allows fluid to flow out of thisoutput and toward the blade's edge, flow that is propelled by a sourceof pressure. However, the positioning of this irrigation output withinthe contour of the blade tip results in a bifurcation or splitting ofthe irrigation flow, such splitting tending to distribute fluid at anangle away from the blade's edge. Mentioned above, the excessive heatgenerated using any cutting blade, including an ultrasonic cuttingblade, is focused most significantly at the blade and bone interface.This example for an ultrasonic blade with cooling capabilities, then,does little to actually cool the blade at the blade and bone interface,but instead serves merely to flush debris from the surgical site. Again,having copious amounts of irrigation fluid in the surgical site canhamper the surgeon's ability to visualize important anatomic structures.Furthermore, this ultrasonic blade is not well-suited to cutting largecross-sections of bone and is used almost exclusively in spine, oral ormaxillofacial surgeries, which involve cutting of small bones.

Even assuming that any of the irrigation systems incorporated into thevarious bone saws provide some measure of cooling, thermal burning ofboth neighboring soft tissues and bone surfaces remains a significantproblem. Because the working surface of the blade also moves rapidly,considerable heat is generated along its length, too. The dynamic motionof the surf contacts neighboring soft tissues, potentially burning them.With respect to an osteotomy, as the blade passes through thecross-section of bone, the freshly-cut bone surfaces remain in constantand direct contact with the rapidly vibrating shaft of the blade. As aresult, it is not uncommon to burn the bone, produce smoke and, moreimportantly, kill osteocytes. In fact, simply lengthening an ultrasonicblade to accommodate large cross-sections of bone tissue, for example,increases the surface area through which heat can transfer and, thus, isavoided by manufacturers of these types of blades. While irrigationdirected specifically toward the blade's leading edge may provide somemeasure of cooling at the blade and bone interface, irrigation alone isinsufficient in trying to avoid prolonged exposure of bone tissue, forexample, to temperatures in excess of 47° C. Therefore, there remains aneed for a surgical device that is capable of cutting bones with largecross-sections, such as the femur, while maintaining a workingtemperature along the entirety of the blade shaft that does not inhibitproper healing of the bone tissue.

In some applications, there can be a need to cool the blade to preventtemperatures along the working surface of the blade or drill and thesurrounding bone from reaching the limit for thermal necrosis of bone.Efforts previously used include such techniques as saline spraying,which results in visualization issues at the cutting site, or slowingdown the procedure itself to allow the blade to cool, which increasesthe operating room time. Thus, there is also a need to cool the bladewhile minimizing impact to current surgical procedures with regards tovisibility and time of operation.

BRIEF DESCRIPTION OF THE DRAWINGS

Having thus described the presently disclosed subject matter in generalterms, reference will now be made to the accompanying Drawings, whichare not necessarily drawn to scale, and wherein:

FIG. 1 is a top perspective view of a cutting device having a bladeworking body that defines openings for emitting coolant therefrom inaccordance with embodiments of the present disclosure;

FIG. 2 is a top perspective view of the blade working body shown in FIG.1 ;

FIGS. 3 and 4 illustrate a cross-sectional, top perspective view and atop view, respectively, of the blade working body shown in FIGS. 1 and 2with internal channels shown with broken lines;

FIG. 5 is a cross-sectional, top perspective view of the blade workingbody shown in FIGS. 1-4 ;

FIG. 6 is a top perspective view of another example working blade bodythat defines openings for emitting coolant therefrom in accordance withembodiments of the present disclosure;

FIGS. 7 and 8 illustrate a top perspective view and a cross-sectional,top view, respectively, of the blade working body shown in FIG. 6 withan internal channel shown with broken lines;

FIG. 9 is a zoomed-in, top view of the cutting end of the blade workingbody;

FIG. 10 is a side cross-sectional view of the cutting end of the bladeworking body;

FIG. 11 is a side cross-section view of the cutting end of the bladeworking body that is more zoom-in than the view of FIG. 10 ; and

FIG. 12 is a cross-sectional, top perspective view of the blade workingbody shown in FIGS. 7-11 .

SUMMARY

The presently disclosed subject matter relates to medical cuttingdevices having a working blade body that defines an opening for emittingcoolant therefrom and related methods. According to an aspect, a cuttingdevice a static casing. The cutting device also includes a blade workingbody having a first end and a second end. The first end is configured tooperatively connect to a source of movement. The second end includes acutting component. The blade working body defines an interior channelthat extends between the first end and the second end, and defines oneor more openings at the second end for emitting coolant moved throughthe interior channel.

According to another aspect, a method includes providing a cuttingdevice comprising a blade working body including a first end and asecond end. The first end is configured to operatively connect to asource of movement. The second end includes a cutting component. theblade working body defines an interior channel that extends between thefirst end and the second end, and defines one or more openings at thesecond end for emitting coolant moved through the interior channel. Themethod also includes using the interior channel for moving coolantthrough the interior channel and out the one or more openings.

DETAILED DESCRIPTION

The following detailed description is made with reference to thefigures. Exemplary embodiments are described to illustrate thedisclosure, not to limit its scope, which is defined by the claims.Those of ordinary skill in the art will recognize a number of equivalentvariations in the description that follows.

Articles “a” and “an” are used herein to refer to one or to more thanone (i.e. at least one) of the grammatical object of the article. By wayof example, “an element” means at least one element and can include morethan one element.

“About” is used to provide flexibility to a numerical endpoint byproviding that a given value may be “slightly above” or “slightly below”the endpoint without affecting the desired result.

The use herein of the terms “including,” “comprising,” or “having,” andvariations thereof is meant to encompass the elements listed thereafterand equivalents thereof as well as additional elements. Embodimentsrecited as “including,” “comprising,” or “having” certain elements arealso contemplated as “consisting essentially of” and “consisting” ofthose certain elements.

Recitation of ranges of values herein are merely intended to serve as ashorthand method of referring individually to each separate valuefalling within the range, unless otherwise indicated herein, and eachseparate value is incorporated into the specification as if it wereindividually recited herein. For example, if a range is stated asbetween 1%-50%, it is intended that values such as between 2%-40%,10%-30%, or 1%-3%, etc. are expressly enumerated in this specification.These are only examples of what is specifically intended, and allpossible combinations of numerical values between and including thelowest value and the highest value enumerated are to be considered to beexpressly stated in this disclosure.

Unless otherwise defined, all technical terms used herein have the samemeaning as commonly understood by one of ordinary skill in the art towhich this disclosure belongs.

As referred to herein, the term “cutting device” can be any suitablecomponent movable for cutting into or generally transforming a material(e.g., bone). The cutting device can include a blade that operatesthrough large or small (e.g., vibrations) mechanical motion. The motioncan be in a specific direction(s). For example, the cutting device canbe moved in an oscillating manner, flexing, bending, rotating,torsionally, longitudinally, and the like.

In accordance with embodiments, a cutting device includes a bladeworking body that defines a cutting end. Further, the blade working bodydefines an interior channel that extends between its ends, and definesone or more openings at a distal end for emitting coolant moved throughthe interior channel. The coolant can be a suitable fluid for cooling aworkspace or material being cut or transformed, such as bone. In anotherexample, the coolant may be a gas, which can be a colorless or lessvisually opaque alternative to liquid cooling. It is noted that gas isused in various medical procedures such as laparoscopically toinsufflate the abdominal space and has the advantage of being able topropagate everywhere into any space it occupies. Gas pressurized intoadjacent bone within the cutting plane can actively pre-cool it prior tocontact with the working surface of the blade.

Gas as a coolant can be emitted from opening in the top surface and/orbottom surface of the working blade body. Coolant can be stored withincutouts, reservoirs, or reliefs where gas can be pressurized into thebone as the blade translates into the cutting plane. This concept woulduse something like CO₂ to help actively cool the blade and bonethroughout the cutting process through convention. The gas can becontinuously pumped so that there can be a constant flow of the gasalong the channels throughout the procedure. In another embodiment, gascan be brought to the front of the blade through an internal channel (asopposed to from the base of the blade and shot forward to the cuttingplane-like in the previous concept). This can provide the benefit thatthe cooling works internal to the blade and is also immediately exposedat the cutting edge. This can provide a more targeted method of coolingthe blade from the front edge itself. In a further iteration, thecutting device can be used to deliver therapeutics in a more controlledmanner since it works from the blade edge as it cuts through the boneitself.

FIG. 1 illustrates a top perspective view of a cutting device 100 havinga blade working body 102 that defines openings 104 for emitting coolanttherefrom in accordance with embodiments of the present disclosure.Referring to FIG. 1 , the cutting device 100 includes a handle 103 and ahousing 106. Although not shown, the cutting device 100 may include astatic casing positioned adjacent to the blade working body 102 (e.g.,either to the top or bottom) for supporting the blade working body 102as will be understood by those of skill in the art. Although thesecomponents are not shown in FIG. 1 , the housing 106 may contain in aninterior space therein for components, such as any suitable transduceror motor, to produce a desired mechanical motion with a cutting end,generally designated 108. It is noted that in this example the device100 is described as being an oscillating saw blade, but it mayalternatively be of any other suitable type (e.g., such as an ultrasonictransducer driving the blade through piezoelectric elements and smallervibrations). The oscillating motor, which may be suitably powered toproduce motion through the working surface of the blade to its bladeedge, can be operatively attached to an end of the blade working body102 that is closest to the housing 106. Oscillatory motion produced bythe transducer/motor can propagate along a main body of the bladeworking body 108 towards an end of the blade working body 108 thatopposes the end of the blade working body 108 that is attached to theoscillatory transducer/motor. It is noted that any other suitable motionmay be produced alternative to mechanical oscillations such as thoseproduced by traditional bone saws (e.g., such as those produced byultrasonic cutting devices that use smaller scale vibrations).

The cutting end 108 can be a blade tip configured to cut, ablate, abradeor otherwise transform, for example, bone or other tissue. The cuttingend 108 includes a top surface 110 and an opposing bottom surface (notshown in FIG. 1 ). The cutting end 108 defines at least one blade edge112. In this example, the blade edge 112 has serrations for cutting,ablating, abrading, or otherwise transforming bone or other tissue. Inthe alternative, the blade edge 112 is a continuous, planar arc, andsharpened along its entirety for cutting, ablating, abrading, orotherwise transforming bone or other tissue.

The blade working body 102 may be made of a material suitable forbiomedical applications, such as titanium, stainless steel or the like.

Although not shown in FIG. 1 , the blade working body 102 may define oneor more internal channels therein for routing cooling gas or othercoolant to the openings 104. The cooling gas is then emitted from theopenings 104 towards a workspace or other area near the blade edge 112.For example, the cooling gas can be directed towards an area of bonethat is being cut by the blade edge 112 for cooling of the bone and/orthe cutting end 108.

FIG. 2 illustrates a top perspective view of the blade working body 102shown in FIG. 1 . Referring to FIG. 2 , the blade working body 102includes an attachment end 200 for releasably attaching to the housing106 (shown in FIG. 1 ) and the source of movement. When the source ofmovement is activated, the cutting end 108 can move back-and-forthrotationally about an axis 202. The rotational movement of the cuttingend 108 is generally in the directions indicated by double arrow 204.

With continuing reference to FIG. 2 , an inlet component 206 ispositioned along the axis 202 such that the blade working body 102rotates about it. Further, the inlet component 206 defines an opening208 for receipt of the cooling gas. The opening 208 is fluidly connectedto the internal channel. The cooling gas received in the opening 208 canbe moved through the internal channels and out of openings 104.

Openings 104 shown in this embodiment are arranged as an array on thetop surface 110 and also on the bottom surface of the blade working body102. Although, it should be noted that the openings may be alternativelypositioned, sized, and shape depending on the application. Further, anysuitable number of openings may be provided.

Emission of cooling gas via openings 104 provides a “gas exchangeboundary” for targeting cooling in a released manner depending on thesize, shape and positioning of openings 104 adjacent material (e.g.,bone) being transformed or cut. This can occur during cutting for activecooling.

FIGS. 3 and 4 illustrate a cross-sectional, top perspective view and atop view, respectively, of the blade working body 102 shown in FIGS. 1and 2 with internal channels 300 shown with broken lines. Referring toFIG. 3 , internal channels 300 form a pathway for cooling gas enteringthe opening 208 to move through the cutting blade body 102, and exitopenings 104. FIG. 3 illustrates a top perspective view of the bladeworking body 102 shown in FIGS. 1 and 2 with internal channels 300 shownwith broken lines.

FIG. 5 illustrates a cross-sectional, top perspective view of the bladeworking body 102 shown in FIGS. 1-4 . Referring to FIG. 5 , this figureshows a cross-section of one of the internal channels 300.

FIG. 6 illustrates a a top perspective view of another example workingblade body 600 that defines openings 602 for emitting coolant therefromin accordance with embodiments of the present disclosure. Referring toFIG. 6 , the working blade body 600 can be suitably attached to ahousing and a handle (not shown) similar to the working blade body 102shown in FIGS. 1-5 . Further, a proximal end 604 can be attached to asource of movement, such as a transducer or motor, to produce a desiredmechanical motion with a cutting end, generally designated 606. Thecutting end 606 is a distal end.

The cutting end 606 can define a blade edge 608 that is planar arc inshape. Alternatively, the blade edge 608 may be any other suitable shapeand size.

Although not shown in FIG. 6 , the blade working body 600 may define oneor more internal channels therein for routing cooling gas or othercoolant to the openings 602. The cooling gas can then be emitted fromthe openings 602 towards a workspace or other area near the blade edge608. For example, the cooling gas can be directed towards an area ofbone that is being cut by the blade edge 608 for cooling of the boneand/or the cutting end 606. An opening 610 can be defined on a side ofthe cutting device 600 for introduction of the cooling gas into theinternal channels.

FIGS. 7 and 8 illustrate a top perspective view and a cross-sectional,top view, respectively, of the blade working body 600 shown in FIG. 6with an internal channel 700 shown with broken lines. Referring to FIGS.7 and 8 , the internal channel 700 forms a pathway for cooling gasentering the openings 602 to move through the cutting blade body 600,and exit openings 602. FIG. 9 is a zoomed-in, top view of the cuttingend 606 of the blade working body 600. FIG. 10 is a side cross-sectionalview of the cutting end 606 of the blade working body 600. FIG. 11 is aside cross-section view of the cutting end of the blade working body 600that is more zoom-in than the view of FIG. 10 .

FIG. 12 illustrates a cross-sectional, top perspective view of the bladeworking body 600 shown in FIGS. 7-11 . Referring to FIG. 12 , thisfigure shows a cross-section of the internal channel 700.

It is noted that embodiments of the present disclosure are described asproducing or having ultrasonic movement produced by a piezoelectrictransducer or any other suitable source for motion or movement. It isnoted that in the alternative the movement may be any suitable type ofmovement produced by any suitable source (e.g., large/macro basedmotions similar to more traditional bone cutting devices). Further,cutting may be applied to any suitable material or technical field.Suitable mechanical sources could include anything from piezoceramics,electro-mechanical motors, user generated hand motion, etc. However, itsimportant to note that all types of mechanisms can produce equivalenttypes of movements. These could include, but are not limited to, axialmotion, bending motion, torsional motion, flexural motion, etc. It isalso feasible that the source of mechanical motion can combine all ofthese modes of motion to create more complex movements. Regardless ofthe motion and/or the manner in which it is produced, there would be aresultant motion at the end of the functional device/blade edge. Thismotion would, under the claims of this patent, be captured within thebounds of the static casing/rails which function to share load, decouplemotion, and prevent heat transfer to the functional working surfaces.Examples include oscillating/sagittal/reciprocating medical bone cuttingsaws, medical rotary drills, medical rotary burs, construction hammerdrills, construction rotary hammer, wood cutting axes, constructionoscillating multi-tools, oscillating medical cast saws, cutting saws,etc. The principles of the claims presented in this patent could beapplied to all of these devices with equivalently realized benefits.

While the embodiments have been described in connection with the variousembodiments of the various figures, it is to be understood that othersimilar embodiments may be used, or modifications and additions may bemade to the described embodiment for performing the same functionwithout deviating therefrom. Therefore, the disclosed embodiments shouldnot be limited to any single embodiment, but rather should be construedin breadth and scope in accordance with the appended claims.

What is claimed is:
 1. A cutting device comprising: a blade working bodyincluding a first end and a second end, the first end being configuredto operatively connect to a source of movement, the second end includinga cutting component, wherein the blade working body defines an interiorchannel that extends between the first end and the second end, anddefines one or more openings at the second end for emitting coolantmoved through the interior channel.
 2. The cutting device of claim 1,wherein the opening is proximate a blade edge of the blade working body.3. The cutting device of claim 1, wherein the one or more openingsinclude a first opening, and wherein the blade working body defines asecond opening that is fluidly connected to the interior channel foremitting coolant.
 4. The cutting device of claim 1, wherein the cuttingcomponent comprises a curved cutting portion.
 5. The cutting device ofclaim 1, wherein the blade working body defines at least one otherinterior channel that extends between the first end and the second end,and wherein the blade working body defines at least one other opening atthe second end for emitting coolant moved through the at least one otherinterior channel.
 6. The cutting device of claim 1, further comprising astatic casing attached to the source of movement and substantiallystationary with respect to the source of movement.
 7. The cutting deviceof claim 1, wherein the blade working body is substantially flat with afirst surface and a second surface.
 8. The cutting device of claim 7,wherein the one or more openings are positioned on one of the firstsurface or the second surface of the blade working body.
 9. The cuttingdevice of claim 7, wherein the blade working body defines a plurality ofopenings including the one or more openings, wherein the plurality ofopenings are arranged as an array on one of the first surface and thesecond surface of the blade working body.
 10. The cutting device ofclaim 9, wherein the plurality of openings are arranged as a first arrayand a second array on the first surface and the second surface,respectively, of the blade working body.
 11. The cutting device of claim1, further comprising an inlet attached to the working blade body anddefining a pivot point for rotational movement of the working bladebody, wherein the inlet is fluidly connected to the interior channel formovement of coolant through the inlet, into the interior channel, andout of the one or more openings.
 12. The cutting device of claim 1,wherein the cutting component defines a blade edge, and wherein the oneor more openings are positioned at the blade edge.
 13. A methodcomprising: providing a cutting device comprising a blade working bodyincluding a first end and a second end, the first end being configuredto operatively connect to a source of movement, the second end includinga cutting component, wherein the blade working body defines an interiorchannel that extends between the first end and the second end, anddefines one or more openings at the second end for emitting coolantmoved through the interior channel; and using the interior channel formoving coolant through the interior channel and out the one or moreopenings.
 14. The method of claim 13, wherein the opening is proximate ablade edge of the blade working body.
 15. The method of claim 13,wherein the one or more openings include a first opening, and whereinthe blade working body defines a second opening that is fluidlyconnected to the interior channel for emitting coolant.
 16. The methodof claim 13, wherein the blade working body defines at least one otherinterior channel that extends between the first end and the second end,and wherein the blade working body defines at least one other opening atthe second end for emitting coolant moved through the at least one otherinterior channel.
 17. The method of claim 13, wherein the blade workingbody is substantially flat with a first surface and a second surface.18. The method of claim 17, wherein the one or more openings arepositioned on one of the first surface or the second surface of theblade working body.
 19. The method of claim 17, wherein the bladeworking body defines a plurality of openings including the one or moreopenings, wherein the plurality of openings are arranged as an array onone of the first surface and the second surface of the blade workingbody.
 20. The method of claim 19, wherein the plurality of openings arearranged as a first array and a second array on the first surface andthe second surface, respectively, of the blade working body.